Patent Number: 7,132,014

Title: Oil-based pigmented ink composition

Abstract: An oil-based pigmented ink composition containing a pigment, a polymer and an organic solvent, wherein the organic solvent contains a (poly)alkylene glycol derivative in an amount of 30 to 90% by weight and a nitrogen-containing heterocyclic compound in an amount of 1 to 30% by weight, each based on the whole weight of the ink composition, and the ink composition has a flash point of at least C.

Inventors: Mizutani; Takuo (Kyoto, JP), Furutani; Takahiro (Suita, JP)

Assignee: Hitachi Maxell, Ltd.

International Classification: C09D 11/02 (20060101)

Expiration Date: 2019-11-07 0:00:00